Remove PackageIconUrl property from project props

Author: polewskm

NCode.ProjectSettings.Scaffold/build/NCode.ProjectSettings.Scaffold.props

@@ -172,7 +172,6 @@
   </ItemGroup>
   <PropertyGroup Condition="'$(NCodeIncludeImage)' == 'true'">
     <PackageIcon Condition="'$(PackageIcon)'==''">$(NCodeImageName)</PackageIcon>
-    <PackageIconUrl Condition="'$(PackageIconUrl)'==''">https://raw.githubusercontent.com/NCodeGroup/$(PackageId)/$(NCodeDefaultBranch)/$(NCodeImageName)</PackageIconUrl>
   </PropertyGroup>
 
   <!--

README.md

@@ -28,3 +28,4 @@ Contains common settings, scripts, and files to scaffold C# projects for NCodeGr
 * v1.0.15 - Fix nuspec wildcard handling
 * v1.0.16 - Fix targets wildcard handling
 * v1.0.17 - Remove deprecated iconUrl
+* v1.0.18 - Remove PackageIconUrl msbuild property